package com.rdzn.mall.portal.config.authc.aop;

import com.rdzn.mall.portal.config.authc.vo.DefContants;
import com.rdzn.mall.portal.domain.MemberDetails;
import com.rdzn.mall.portal.service.IUserService;
import com.rdzn.mall.portal.util.JwtTokenUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.web.filter.authc.BasicHttpAuthenticationFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestMethod;

import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @Description: 鉴权登录拦截器
 * @Author: Scott
 * @Date: 2018/10/7
 **/
@Slf4j
@Component
public class JwtFilter extends BasicHttpAuthenticationFilter {

	@Autowired
	private JwtTokenUtil jwtTokenUtil;
	@Autowired
	private IUserService userService;
	/**
	 * 执行登录认证
	 *
	 * @param request
	 * @param response
	 * @param mappedValue
	 * @return
	 */
	@Override
	protected boolean isAccessAllowed(ServletRequest request, ServletResponse response, Object mappedValue) {
		try {
			executeLogin(request, response);
			return true;
		} catch (Exception e) {
//			throw new AuthenticationException("Token失效，请重新登录", e);
			return true;
		}
	}

	/**
	 *
	 */
	@Override
	protected boolean executeLogin(ServletRequest request, ServletResponse response) throws Exception {
		HttpServletRequest httpServletRequest = (HttpServletRequest) request;
		String token = httpServletRequest.getHeader(DefContants.X_ACCESS_TOKEN);
//		JwtToken jwtToken = new JwtToken(token);
		// 提交给realm进行登入，如果错误他会抛出异常并被捕获
//		getSubject(request, response).login(jwtToken);
		String username = jwtTokenUtil.getUserNameFromToken(token);
		if (username == null) {
			throw new AuthenticationException("token非法无效!");
		}
		MemberDetails userDetails = userService.getUserDetails(username);
		if (userDetails.getUmsMember() == null) {
			throw new AuthenticationException("用户不存在!");
		}
//		UsernamePasswordToken token1 = new UsernamePasswordToken(userDetails.getUmsMember().getId()+"", userDetails.getUmsMember().getWeixinOpenid());
//		SecurityUtils.getSubject().login(token1);
		UsernamePasswordAuthenticationToken authentication = new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());
//			authentication.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
		log.debug("authenticated user:{}", username);
		SecurityContextHolder.getContext().setAuthentication(authentication);
		// 如果没有抛出异常则代表登入成功，返回true
		return true;
	}

	/**
	 * 对跨域提供支持
	 */
	@Override
	protected boolean preHandle(ServletRequest request, ServletResponse response) throws Exception {
		HttpServletRequest httpServletRequest = (HttpServletRequest) request;
		HttpServletResponse httpServletResponse = (HttpServletResponse) response;
		httpServletResponse.setHeader("Access-control-Allow-Origin", httpServletRequest.getHeader("Origin"));
		httpServletResponse.setHeader("Access-Control-Allow-Methods", "GET,POST,OPTIONS,PUT,DELETE");
		httpServletResponse.setHeader("Access-Control-Allow-Headers", httpServletRequest.getHeader("Access-Control-Request-Headers"));
		// 跨域时会首先发送一个option请求，这里我们给option请求直接返回正常状态
		if (httpServletRequest.getMethod().equals(RequestMethod.OPTIONS.name())) {
			httpServletResponse.setStatus(HttpStatus.OK.value());
			return false;
		}
		//update-begin-author:taoyan date:20200708 for:多租户用到
//		String tenant_id = httpServletRequest.getHeader(DefContants.TENANT_ID);
//		TenantContext.setTenant(tenant_id);
		//update-end-author:taoyan date:20200708 for:多租户用到
		return super.preHandle(request, response);
	}
}
